Presentation is loading. Please wait.

Presentation is loading. Please wait.

The Shoulder Girdle. Shoulder Girdle Bones Clavicle and Scapula –Move as a unit.

Similar presentations


Presentation on theme: "The Shoulder Girdle. Shoulder Girdle Bones Clavicle and Scapula –Move as a unit."— Presentation transcript:

1 The Shoulder Girdle

2 Shoulder Girdle Bones Clavicle and Scapula –Move as a unit

3 Scapula Key Bony Landmarks (Palpate) Glenoid Fossa Acromion Process- continuation of the spine of scapula and located at the lateral end of the clavicle Coracoid Process- located just below the lateral end of the clavicle Spine of Scapula Lateral Border Medial Border-vertebral border Inferior Angle Supraspinous Fossa- located superior to the spine of the scapula Infraspinous Fossa- located inferior to the spine of the scapula

4 Scapula Key Bony Landmarks

5 Clavicle and Sternum Key Bony Landmarks Clavicle: –Sternal End-located proximal to sternum –Acromial End-located proximal to scapula Sternum: –Manubrium –Body –Xiphoid Process

6

7 Scapulothoracic Joint Not a true synovial joint No ligamentous support Supported dynamically and moves on the rib cage by two muscles; serratus anterior and subscapularis

8 Sternoclavicular Joint Clavicle articulates with sternum Synovial joint Very strong joint and dislocation is rare

9 Acromioclavicular Joint Acromion process of scapula articulates with clavicle Sustains great forces Commonly injured by collision sports such as hockey, football, rugby, horseback riding, mountain biking

10 Glenohumeral Joint Scapula articulates with head of humerus The joint contains a shallow socket called the glenoid fossa The glenoid fossa is only one-fourth the size of the humeral head

11 Movements of the Shoulder Girdle Protraction (Abduction) Retraction (Adduction) Upward Rotation Downward Rotation Elevation Depression Anterior Tilt

12 Movements Focus on specific bony landmarks –inferior angle –glenoid fossa –acromion process Shoulder girdle movements = scapula movement

13 Protraction (abduction) –scapula moves laterally away from spinal column Retraction (adduction) –scapula moves medially toward spinal column

14 Upward Rotation –turning glenoid fossa upward & moving inferior angle superolaterally away from spinal column Downward Rotation –returning inferior angle inferomedially toward spinal column & glenoid fossa to normal position

15 Elevation –upward or superior movement, as in shrugging shoulders Depression –downward or inferior movement, as in returning to normal position

16 Anterior Tilt Rotational movement of scapula occurring during glenohumeral hyperextension Superior border moving anteroinferiorly & inferior angle moving posterosuperiorly

17 Scapulohumeral Rhythm The coordinated movements of the scapula, clavicle, and humerus Shoulder joint and shoulder girdle work together in carrying out upper extremity activities Glenohumeral movement requires the scapulothoracic, acromioclavicular, and sternoclavicular joints to also move

18 Scapulohumeral Rhythm Scapula rotates 1 o for every 2 o movement of the humerus (Overall 2:1 ratio of glenohumeral to scapulothoracic movement) The scapula rotates 60 degrees, the humerus abducts 120 degrees, totaling 180 degrees of abduction at the GH joint

19 Shoulder JointShoulder Girdle Flexion Upward Rotation and Elevation Extension Downward Rotation and Depression AbductionUpward Rotation AdductionDownward Rotatio n Horizontal Adduction Protraction Horizontal Abduction Retraction Medial Rotation Protraction Lateral RotationRetraction

20 Muscles that Move the Shoulder Girdle 5 muscles primarily involved in shoulder girdle movements –All originate on axial skeleton and insert on scapula and/or clavicle –Do not attach to humerus and do not cause shoulder joint actions –Essential in providing dynamic stability of the scapula so it can serve as a relative base of support for shoulder joint activities such as throwing, batting, and blocking

21 Muscles that Move the Shoulder Girdle Posterior: –Trapezius (upper, middle, and lower) –Levator Scapula –Rhomboids (minor and major) Anterior: –Serratus Anterior –Pectoralis Minor

22 Trapezius Origins Upper Fibers: Occipital Bone (skull) and Spinous Process of C7 Middle Fibers: Spinous Process of T1-T5 Lower Fibers: Spinous Process of T6-T12

23 Trapezius Insertions Upper Fibers: –Lateral 1/3 of clavicle Middle Fibers: –Acromion Process of Scapula Lower Fibers: –Root of the Spine of Scapula

24 Trapezius Actions Upper Fibers: –Elevation of Scapula Middle Fibers: –Retraction –Upward Rotation of Scapula Lower Fibers: –Depression –Upward rotation of Scapula

25 Trapezius Integrated Functions Upper Fibers: –Provide dynamic stability to the cervical spine and shoulder Middle Fibers: –Eccentrically decelerates scapular protraction –Assists in dynamically stabilizing the scapula Lower Fibers: –Eccentrically decelerates scapular elevation –Assists in dynamically stabilizing the scapula

26 Levator Scapula Origin: –Transverse Process of C1-C4 Insertion: –Medial Border of Scapula Actions: –Elevation of Scapula –Downward Rotation of Scapula –Extension of Head and Neck

27 Levator Scapula Integrated Functions Assists in eccentric deceleration of depression and upward rotation of scapula Assists in eccentric deceleration of flexion of head and neck Assists in dynamic stabilization of the cervical spine and scapula

28 Rhomboids Minor and Major Origin: Minor: Spinous Process of C7-T1 Major: Spinous Process of T2-T5 Insertion: Minor: Root of the Spine of the Scapula Major: Between the Root of the Spine of the Scapula and the Inferior Angle of the Scapula

29 Rhomboids Minor and Major Actions Retraction of Scapula Downward Rotation of Scapula

30 Rhomboids Minor and Major Integrated Functions Assists in eccentric deceleration of scapular protraction and upward rotation of scapula Assists in stabilization of scapula

31

32 Serratus Anterior Origin: –Ribs 1-9 Insertion: –Anterior surface of the medial border of scapula Actions: –Protraction of Scapula –Upward Rotation of Scapula

33 Serratus Anterior Integrated Functions Assists in eccentric deceleration of retraction of scapula Assists in stabilization of the scapula Helps to hold the scapulothoracic joint along the medial border of the scapula

34 Pectoralis Minor Origin: –Ribs 3-5 Insertion: –Coracoid Process of Scapula Actions: Protraction of Scapula Depression of Scapula Downward Rotation of Scapula

35 Pectoralis Minor Integrated Functions Assists in eccentric deceleration of retraction of scapula Assists in dynamic stabilization of the scapula

36 Putting It All Together Scapular Elevation: –Upper Trapezius –Levator Scapula Scapular Depression: –Lower Trapezius –Pectoralis Minor Scapular Protraction: –Serratus Anterior –Pectoralis Minor Scapuluar Retraction: –Middle Trapezius –Rhomboids

37 Putting It All Together Scapular Upward Rotation: –Serratus Anterior –Upper and Lower Trapezius Scapular Downward Rotation: –Rhomboids –Levator Scapula –Pectoralis Minor

38 Scapular Winging A winged scapula is a shoulder condition in which the scapula sticks out at the back, particularly when performing pushing exercises like the push up Common symptoms of a winged scapula include the following: –Pain and limited shoulder elevation –Difficulty in lifting weights –Pressure on the scapula from a chair when sitting

39 Scapular Winging A winged scapula can be caused by one of two reasons: –Damage to the long thoracic nerve of the shoulder. It may cause paralysis of the serratus anterior. Medical clearance is necessary before engaging in any exercise –General weakness of the serratus anterior muscle. In this case, the winging scapula can be improved with corrective exercises designed to build strength in the weak serratus anterior muscle.

40 Scapular Winging Three corrective exercises may strengthen serratus anterior: –Hand Walks, Arm Shuffle, Push Up Plus Pay careful attention to scapulohumeral rhythm and symmetry Maintain a stable pelvis and neck

41 Hand Walks The pattern is one hand up, next hand up, one hand down, other hand down, repeat.

42 Arm Shuffle Begin with your hands very wide. Shift your weight back and forth while simultaneously touching one hand on top of the other as shown

43 Push Up Plus Once you have completed a push up, add the “plus” motion by protracting your scapula as much as possible without changing your spinal alignment. Hands should be shoulder width apart.

44 Rounded Shoulders A common postural condition in which the scapula are protracted and depressed and the humeri are medially rotated When the trapezius muscles are weak they contribute to rounded shoulders because they are unable to efficiently oppose protraction of the scapula (especially if protractors pectoralis minor and serratus anterior are tight)

45 Trapezius Tightness Whenever a phone is crimped between head and shoulder, it may cause tightness of the upper trapezius Whenever a purse or book bag is carried upon the shoulder, people subconsciously elevate the scapula on the side which it is carried. This causes the elevators to isometrically contract for long periods of time This is another common posture that may cause tightness of the upper trapezius

46 Rhomboids and Pectoralis Minor When rhomboids are weak they can contribute to rounded shoulders because they cannot oppose protraction and depression of the scapula When pectoralis minor is tight, they can contribute to rounded shoulders

47 Scapular Depression on Bench This is an exercise for individuals who need to work the lower traps, rhomboids, and serratus anterior muscles Maintain a tall posture throughout the exercise and good stability through the abdominal complex.

48 Supine Row Lie under bar so that the bar is at mid-sternum level Activate core by drawing in Perform row and lift body towards the bar The bar should meet the mid-sternum. Lower slowly AVOID retracting the scapula before pulling yourself up, it should be a smooth action through the scapulothoracic joint as you lift yourself towards the bar.

49 Levator Scapula Stretch In the proper posture sit on a ball or chair with a minimum of 90 degrees bend at the hips and knees Draw your belly button inward toward your spine Tuck your chin in and rotate the head in right direction of your opposite pocket while retracting and depressing shoulder of the side being stretched Hold for seconds, repeat for 2-3 reps

50 Upper Trapezius Stretch In optimal posture sit on the ball or bench with a minimum of 90 degree bend at the hips and knees. Draw your belly button inward toward your spine Tuck your chin in and slowly draw your left ear to your left shoulder until tension is felt Hold for seconds, repeat for 2-3 reps

51 Foam Roll Rhomboids Draw your belly button inward toward your spine Stabilize the head in “neutral” Roll mid-back area on the foam roll If a “tender point” is located, stop rolling, and rest on the tender point until pain decreases


Download ppt "The Shoulder Girdle. Shoulder Girdle Bones Clavicle and Scapula –Move as a unit."

Similar presentations


Ads by Google